On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 1 on 2008-12-11 Removed from Chrome version 48 on 2016-01-20
In Chrome Android version 18 on 2012-06-27 Removed from Chrome Android version 48 on 2016-01-26
Not in Edge
In Firefox version 3 on 2008-06-17
In Firefox for Android version 4 on 2011-03-29
In Internet Explorer version 8 on 2009-03-19
Not in Quest Browser
In Opera version 15 on 2013-07-02 Removed from Opera version 35 on 2016-02-02
In Opera Android version 14 on 2013-05-21 Removed from Opera Android version 35 on 2016-02-04
Not in Safari
Not in Safari on iOS
In Samsung Internet version 1.0 on 2013-04-27 Removed from Samsung Internet version 5.0 on 2016-12-15
In WebView Android version 4.4 on 2013-12-09 Removed from WebView Android version 48 on 2016-01-26
Not in WebView on iOS